KR20170092749A - Cloud media service system supporting multi-DRM and its operation method - Google Patents

Cloud media service system supporting multi-DRM and its operation method Download PDF

Info

Publication number
KR20170092749A
KR20170092749A KR1020160013575A KR20160013575A KR20170092749A KR 20170092749 A KR20170092749 A KR 20170092749A KR 1020160013575 A KR1020160013575 A KR 1020160013575A KR 20160013575 A KR20160013575 A KR 20160013575A KR 20170092749 A KR20170092749 A KR 20170092749A
Authority
KR
South Korea
Prior art keywords
drm
content
information
module
service system
Prior art date
Application number
KR1020160013575A
Other languages
Korean (ko)
Inventor
임형민
황석찬
정근호
성선종
조득연
Original Assignee
(주)젠솔소프트
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)젠솔소프트 filed Critical (주)젠솔소프트
Priority to KR1020160013575A priority Critical patent/KR20170092749A/en
Publication of KR20170092749A publication Critical patent/KR20170092749A/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4627—Rights management associated to the content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/633—Control signals issued by server directed to the network components or client
    • H04N21/6332—Control signals issued by server directed to the network components or client directed to client
    • H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
    • H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60—Digital content management, e.g. content distribution
    • H04L2209/603—Digital right managament [DRM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3246—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of data relating to permitted access or usage, e.g. level of access or usage parameters for digital rights management [DRM] related to still images

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Storage Device Security (AREA)

Abstract

In a cloud media service system supporting multi-DRM, a multi-DRM module for applying all DRM technologies allowed in a system to encrypted content using a common encryption scheme is configured, The present invention relates to a cloud media service system supporting multi-DRM capable of using the same content regardless of platforms, and a method of operating the same.
A cloud media service system supporting multi-DRM according to the present invention includes an encryption module for generating an encrypted content, a decryption key and key identifier information by commonly encrypting a content uploaded by a content providing terminal, One or more DRM licensing servers for verifying licenses for usage rights and access policies of content, content setting information and user information from a content providing terminal and a user terminal, respectively, for receiving multi-DRM modules for packaging one or more DRMs And a DRM module for transferring the DRM metadata to the DRM module. The multi-DRM module packages the DRM into the encrypted content using the DRM meta data transmitted from the DRM interworking unit and the DRM interworking unit for generating the DRM metadata using the content setting information DRM to generate DRM contents As including Li unit has a technical feature.

Description

[0001] The present invention relates to a multi-DRM (Multi-DRM)

In a cloud media service system supporting multi-DRM, a multi-DRM module for applying all DRM technologies allowed in a system to encrypted content using a common encryption scheme is configured, The present invention relates to a cloud media service system supporting multi-DRM capable of using the same content regardless of platforms, and a method of operating the same.

Due to the development of Internet technologies and large-scale multimedia content technology, a growing number of companies are providing various high-quality media services. The convenience of digital information has increased the demand for digital contents. With the advantage of ease of production and storage, the production of digital contents has increased, and with the development of cloud technology, it is easy to store and manage such high capacity digital media contents Service to the user. In addition, to facilitate the use of cloud media services on more devices, a new media environment called N-screen has emerged. N-screen is a service that provides content from multiple devices capable of Internet access. It is a technology that can enjoy without interruption. Accordingly, various media service providers store high-capacity media files on a cloud server and provide N-screen based streaming or download services to users.

  In order to service digital media contents, secure transmission and use of contents should be considered first, and a service provider of media contents is applying DRM (Digital Rights Management) technology for content copyright protection. DRM technology provides a series of protection and management systems for the prevention of illegal copying of content and the acquisition of use rights of contents, generation and distribution of contents, and use of contents.

Korean Patent Registration No. 10-0817974 entitled " DRM Contents Providing / Playback Method and Apparatus ", which is related to the prior art, discloses a method for preventing illegal copying of contents that are initially provided by inserting copyright information of contents using terminal information, A technique for preventing an illegal distribution of a streamed content file is disclosed. However, because DRM technology is used to control the use of digital contents in the same DRM technology, DRM technology is generally dependent on one platform. In order to be used on multiple platforms, DRM technology There is a problem that must be applied. Since the DRM technology is platform-dependent, if the file is copied / moved to the platform environment different from the first downloaded platform, the file can not be authenticated and the decryption / re-encryption process of the media content file There is a problem in that additional cost due to network transmission or the like may occur in the process of authenticating and using the new DRM information through the current platform.

Therefore, in order to solve these inconveniences, media content providers have been demanding to use various DRM by applying one content protection technology, and as a technology supporting them, different encryption methods are not applied according to each DRM technology, However, in order to use the media contents protected by the common encryption method in different terminals, there is a problem that information about a plurality of DRM technologies must be included in the contents.

In order to solve the above problems, the present invention provides a multi-DRM-enabled cloud media service system, comprising: a multi-DRM (Multi-DRM) system for applying all DRM technologies allowed in a system to encrypted contents using a common encryption scheme; Module, it is an object of the present invention to use one content DRM technology to use the same content regardless of platforms in various different terminals allowed in the system.

The above object of the present invention is achieved by a cloud media service system supporting multi-DRM, comprising: an encryption module for encrypting contents uploaded by a content providing terminal in order to generate an encrypted content, a decryption key and key identifier information; A DRM license server for verifying a license for a content usage right and an access policy, and a content providing terminal for acquiring content setting information and user information from the user terminal, The DRM interworking unit generating the DRM metadata using the content setting information and the DRM interworking unit receiving the DRM metadata transmitted from the DRM interworking unit, And the arm And a DRM processing unit for packaging the DRM into the enhanced content to generate the DRM content.

It is another object of the present invention to provide a multimedia media service system that supports multi-DRM, in which an encryption module encrypts contents uploaded by a content providing terminal in a common manner to generate encrypted content, and generates a decryption key and key identifier information A second step of packaging the DRM contents by packaging one or more DRMs allowed in the system for each of the one encrypted content in the multi-DRM module, receiving the user information from the coordinating module, and authenticating the user and the user terminal If the authentication of the third step is successful, transmitting the requested content information and the DRM information applied to the user terminal to the multi-DRM module, and the multi-DRM module uses the content information and the DRM information The decryption key and the key identifier information to the corresponding DRM licensing The DRM content is transmitted to the user terminal through a content transmission server, and the user terminal transmits the DRM licensing acquisition information of the DRM metadata included in the DRM content to the user terminal, And requesting licensing by accessing the DRM licensing server using the DRM licensing server. The method for operating the multi-DRM-enabled cloud media service system may further comprise:

Accordingly, the cloud media service system supporting multi-DRM according to the present invention and its operation method apply a plurality of DRMs allowed in a system by using a common encryption method to one media content file, and are authenticated with a DRM technology suitable for each platform Since the media contents can be used, there is no need of re-decrypting and re-encrypting according to the change or replacement of the platform, and there is no additional cost.

1 is a configuration diagram of a cloud media service system supporting multi-DRM according to the present invention,
2 is a flowchart illustrating an operation method of a cloud media service system supporting multi-DRM according to an exemplary embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a cloud media service system supporting multi-DRM according to the present invention. 1, a cloud media service system supporting multi-DRM according to the present invention includes an encryption module 110, a multi-DRM module 120, an adjustment module 130, and a DRM licensing server 140, And further includes a content storage server 150, a database 160, and a content transmission server 170.

The encryption module 110 receives the content uploaded from the owner of the digital media content or the service provider through the content providing terminal and stored in the content storage server 150, encrypts the encrypted content by applying a common encryption method, And transmits the encrypted content to the content storage server 150. At this time, encryption information is recorded in a MPD (Media Presentation Description) file transmitted together with the encrypted content. Meanwhile, the decryption key and the key identifier information generated together in the common encryption process are transmitted to the database 160 for storage management.

The multi-DRM module 120 packages one or more DRMs allowed in the system for each encrypted content with respect to the encrypted content generated by the encryption module 110.

The coordination module 130 receives the user information according to the content usage request from the user terminal and authenticates the user terminal. The coordination module 130 also receives content setting information and user information from the content providing terminal and the user terminal, respectively, ). And transmits the decryption key and the key identifier information to the DRM licensing server 140 in cooperation with the multi-DRM module 120.

The multi-DRM module 120 includes a DRM interworking unit 121 for generating DRM metadata using the content setting information received from the coordinating module 130, And a DRM processing unit 122 for packaging DRM into the encrypted content using the data to generate DRM contents.

The MPD file transmitted together with the DRM content generated by the DRM processing unit 122 includes at least one of content information, encryption information, and DRM information.

The DRM licensing server 140 may validate licenses for content usage rights and access policies, and may be one or more DRM licensing servers for each packaged DRM technology, or a DRM licensing server for all packaged DRMs.

The content storage server 150 stores the content to be uploaded by the content providing terminal. And provides the content according to a request of the encryption module 110, receives and stores the encrypted content generated by the encryption module 110, and provides the encrypted content to the DRM processing unit 122. [

The content setting information includes a sales and access policy for the content provided from the content providing terminal, and the user information received according to the content use request of the user includes at least one of the application of the user terminal, Information.

The database 160 stores and manages the decryption key and the key identifier information generated in the common encryption process and controls the decryption key and the key identifier information in cooperation with the control module 130 and the multi- To the DRM licensing server (140).

Accordingly, the user terminal accesses the appropriate DRM licensing server 140 by using the DRM license acquisition information of the DRM metadata included in the DRM content received through the content transmission server 170, thereby requesting the license.

In the case of the streaming method, since the content is used in the terminal directly connected to the user, it is not necessary to undergo a special authentication process. However, in the case of the download method, the downloaded file can be copied and moved, . Since various DRM technologies that can be applied in the system of the present invention are applied at a time in the user's content request process or are applied in advance, the content can be used in all platform devices authorized in the system. Because of the various DRM technologies, there is no need to decrypt / re-encrypt the content even when copying or moving the content. The content can be used only by receiving the DRM authentication key suitable for the platform to be used in the corresponding platform. However, since an unlimited number of contents can be copied in this process, the number of authenticable devices is limited.

2 is a flowchart illustrating an operation method of a cloud media service system supporting multi-DRM according to an exemplary embodiment of the present invention. As shown in FIG. 2, a method of operating a cloud media service system supporting multi-DRM according to the present invention includes a step of encrypting contents using a common encryption method, a step of encrypting at least one DRM The steps of packaging the technology and verifying the licensing.

More specifically, in the first step, the digital content stored in the content storage server 150 is uploaded by the content providing terminal, and the encryption module generates the encrypted content by applying the common encryption method, and transmits the decryption key and the key identifier information together (S10). The generated encrypted content is transmitted to the content storage server 150 together with the MPD file in which the content information and the encryption information are recorded, and the decryption key and the key identifier information are transmitted to the database 160 and stored and managed. Meanwhile, the decryption key and the key identifier information stored and managed in the database 160 are transmitted to the DRM licensing server 140 in conjunction with the coordination module 130 and the multi-DRM module 120.

In the second step, in the multi-DRM module 120, one or more DRMs allowed in the system are packaged for one encrypted content to generate DRM contents (S20). The MPD file transmitted together with the DRM content includes at least one of content information, encryption information, and DRM information. In the second step, the DRM interlocking unit 121 transmits the MPD file from the content providing terminal A second step of generating DRM metadata using the received content setting information and a second step of creating DRM metadata for the encrypted content using the DRM metadata transmitted from the DRM interworking unit 121 And a second step (2-2) of creating the DRM contents by packaging.

On the other hand, the content setting information includes a sales and access policy for the content provided from the content providing terminal.

In the third step, the control module 130 receives the user information according to the content usage request, and authenticates the user and the user terminal (S30). The user information received from the user terminal An application of the DRM agent, a dedicated player, or a DRM agent.

If the authentication of the third step is successful in step 4, the control module 130 transmits the content information requested to use and the DRM information applied to the user terminal to the multi-DRM module 120 (S40).

In step 5, the multi-DRM module 120 transmits the decryption key and the key identifier information to the corresponding DRM licensing server 140 using the content information and the DRM information received from the coordination module 130 In operation S60, the multi-DRM module 120 transmits the DRM content to the user terminal through the content transmission server 170 in operation S60. At this time, the fifth step and the sixth step can be performed by changing the order.

In operation S70, the user terminal accesses the corresponding DRM licensing server 140 using DRM licensing information of the DRM metadata included in the received DRM content and requests licensing.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Various changes and modifications will be possible.

110: Encryption module 120: Multi-DRM module
121: DRM interlocking unit 121: DRM processing unit
130: arbitration module 140: DRM licensing server
150: Content storage server 160: Database
170: Content transmission server

Claims (13)

A cloud media service system supporting multi-DRM,
An encryption module for commonly encrypting the content uploaded by the content providing terminal to generate an encrypted content, a decryption key and key identifier information;
A multi-DRM module for packaging one or more DRMs allowed in the system for each of the one encrypted content;
One or more DRM licensing servers for verifying licenses for content rights and access policies; And
And an adjustment module for receiving content setting information and user information from the content providing terminal and the user terminal, respectively, and transmitting the received content setting information and user information to the multi-DRM module,
Wherein the multi-DRM module comprises: a DRM interworking unit for generating DRM metadata using the content setting information; and a DRM module for creating a DRM content by packaging the DRM into the encrypted content using the DRM metadata transmitted from the DRM interworking unit, And a processing unit for processing the multi-DRM.
The method according to claim 1,
And a content storage server for storing content to be uploaded by the content providing terminal, wherein the content storage server provides the content to the encryption module, stores the encrypted content generated by the encryption module, Wherein the digital multimedia broadcasting service is provided as a processing unit.
The method according to claim 1,
The content setting information includes a sales and access policy for the content provided from the content providing terminal, and the user information received according to the content use request of the user includes at least one of the application of the user terminal, Wherein the DRM-compliant multimedia media service system includes a plurality of DRM-compliant multimedia media services.
The method according to claim 1,
Wherein the control module authenticates the user terminal through the user information, and transmits the decryption key and the key identifier information to the DRM licensing server in cooperation with the multi-DRM module. system.
The method according to claim 1,
And a database for storing and managing the decryption key and the key identifier information, wherein the database transmits the decryption key and the key identifier information to the DRM licensing server in cooperation with the coordination module and the multi-DRM module A multi-DRM-enabled cloud media service system.
The method according to claim 1,
Wherein the DRM content generated by the DRM processing unit includes content information, encryption information, and DRM information.
The method according to claim 1,
The user terminal requests licensing by accessing the DRM licensing server using the DRM license acquisition information of the DRM metadata included in the DRM content received through the content transmission server. Service system.
A cloud media service system supporting multi-DRM,
A first step of encrypting contents uploaded by a content providing terminal in an encryption module to generate an encrypted content, and generating a decryption key and key identifier information;
A second step of packaging one or more DRMs allowed in the system for each of the one encrypted content in the multi-DRM module to generate DRM contents;
A third step of authenticating the user and the user terminal by receiving the user information from the arbitration module;
If the authentication in the third step is successful, transmitting the requested content information and DRM information applied to the user terminal to the multi-DRM module;
The multi-DRM module transmitting the decryption key and the key identifier information to the corresponding DRM licensing server using the content information and the DRM information;
The multi-DRM module transmitting the DRM content to the user terminal through a content transmission server; And
Wherein the user terminal accesses the DRM licensing server using the DRM licensing information of the DRM metadata included in the DRM content and requests licensing of the DRM licensing server. How to operate the service system.
9. The method of claim 8,
A second step of the DRM metadata generating unit generating the DRM metadata using the content setting information received by the DRM interlocking unit through the adjustment module; And
And a second step of the DRM processing unit generating the DRM content by packaging the DRM in the encrypted content using the DRM metadata transmitted from the DRM interworking unit. A method of operating a media service system.
10. The method of claim 9,
Wherein the content setting information includes a sales and access policy for content provided from a content providing terminal. ≪ RTI ID = 0.0 > 15. < / RTI >
9. The method of claim 8,
Wherein the user information received by the coordinating module from the user terminal includes information on at least one of a user terminal application, a dedicated player, and a DRM agent in the third step. Operating method.
9. The method of claim 8,
Wherein the DRM content generated in the second step includes at least one of content information, encryption information, and DRM information.
9. The method of claim 8,
Wherein the steps of the fifth step and the sixth step are alternated with each other.






KR1020160013575A 2016-02-03 2016-02-03 Cloud media service system supporting multi-DRM and its operation method KR20170092749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160013575A KR20170092749A (en) 2016-02-03 2016-02-03 Cloud media service system supporting multi-DRM and its operation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160013575A KR20170092749A (en) 2016-02-03 2016-02-03 Cloud media service system supporting multi-DRM and its operation method

Publications (1)

Publication Number Publication Date
KR20170092749A true KR20170092749A (en) 2017-08-14

Family

ID=60142004

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160013575A KR20170092749A (en) 2016-02-03 2016-02-03 Cloud media service system supporting multi-DRM and its operation method

Country Status (1)

Country Link
KR (1) KR20170092749A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190085602A (en) 2018-01-11 2019-07-19 숭실대학교산학협력단 Cloud-Based Media Service System Supporting Multi-DRM
KR20190088594A (en) 2018-01-19 2019-07-29 숭실대학교산학협력단 Method for Operation in a Cloud-Based Media Service Supporting Multi-DRM and Recording Medium for Performing the Method
WO2020141823A1 (en) * 2018-12-31 2020-07-09 재단법인 경주스마트미디어센터 Drm content packaging device, drm content packaging system comprising same, and drm content packaging method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190085602A (en) 2018-01-11 2019-07-19 숭실대학교산학협력단 Cloud-Based Media Service System Supporting Multi-DRM
KR20190088594A (en) 2018-01-19 2019-07-29 숭실대학교산학협력단 Method for Operation in a Cloud-Based Media Service Supporting Multi-DRM and Recording Medium for Performing the Method
WO2020141823A1 (en) * 2018-12-31 2020-07-09 재단법인 경주스마트미디어센터 Drm content packaging device, drm content packaging system comprising same, and drm content packaging method

Similar Documents

Publication Publication Date Title
US9424400B1 (en) Digital rights management system transfer of content and distribution
US9342701B1 (en) Digital rights management system and methods for provisioning content to an intelligent storage
Subramanya et al. Digital rights management
KR101307413B1 (en) System and Method for providing DRM license
US8296569B2 (en) Content protection interoperability infrastructure
US20040019801A1 (en) Secure content sharing in digital rights management
CN102316378B (en) Digital copyright protection method based on set-top box and system
WO2008008621A2 (en) Method and apparatus for securely moving and returning digital content
US9419948B2 (en) Method and apparatus for avoiding license storming during an unplanned regional blackout
EP2289013B1 (en) A method and a device for protecting private content
US20090183000A1 (en) Method And System For Dynamically Granting A DRM License Using A URL
CN102075790A (en) Method for distributing and encrypting streaming media
KR101447194B1 (en) Apparatus and method for Sharing DRM Agents
KR20170092749A (en) Cloud media service system supporting multi-DRM and its operation method
KR101662489B1 (en) Cloud based protection proxy server supporting common encryption and its operation method
KR101059144B1 (en) DDR content converter and its method
KR100814064B1 (en) Method and System for packaging DRM contents
KR20190088121A (en) System and method for cloud media service
Piron et al. Improving content interoperability with the dash content protection exchange format standard
US20110004761A1 (en) Viral file transfer
KR100648399B1 (en) Ipmp system and method for two-way distribution trade
KR100619387B1 (en) Drm system and method for sharing digital content encryption key by use of diffie-hallman between drm right issuer and content provider
KR102286303B1 (en) Key Rotation for DRM Systems in DASH base Media Service
Serrão et al. Bringing DRM interoperability to digital content rendering applications
KR20170046941A (en) Distribution service system and method for electronic book optimized cloud system

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application